RECIPES FOR GROWING CRYSTALS

Explanation of I: and II: is at bottom...

Potassium Aluminum Sulfate Dodecahydrate ("Alum" or "Potash Alum"), KAl(SO4)2-12H2O, colorless, cubic I: 20 grams per 100 cc. water
II: 4 grams per original 100 cc. water
Potassium Sodium Tartrate Tetrahydrate ("Rochelle Salt"), KNaC4H4O6-4H2O, colorless, orthorhombic I: 130 grams per 100 cc. water
II: 9 grams per original 100 cc. water
Sodium Chlorate, NaClO3, colorless, cubic I: 113.4 grams per 100 cc. water
II: 4 grams per original 100 cc. water
Sodium Nitrate, NaNO3, colorless, trigonal I: 110 grams per 100 cc. water
II: 3 grams per original 100 cc. water
Potassium Ferricyanide, K3Fe(CN)6, red, monoclinic Dissolve 46.5 grams per 100 cc. water and let it cool to form crystals.
Copper Acetate Monohydrate, Cu(CH3COO)2-2H20, blue-green, monoclinic Dissolve 10 grams per 100 cc. water and let it cool to form crystals.
Nickel Sulfate Hexahydrate, NiSO4-6H2O, blue-green, tetragonal I: 115 grams per 100 cc. water
II: 19 grams per original 100 cc. water
Calcium Copper Acetate Hexahydrate, CaCu(CH3COO)4-6H2O, blue, tetragonal Add 22.5 grams of powdered calcium oxide to 200 cc. of water. Pour into mixture glacial acetic acid until clear. Dissolve separately 20 grams of copper acetate monohydrate into 150 cc. of water. Mix two solutions and let cool.
  Monoamonium Phosphate, NH4H2PO4, colorless without dye Came within off-the-shelf crystal growing kit. Easily grown clusters.
  Magnesium Sulfate Heptahydrate ("Epsom Salt"), MgSO4-7H2O, colorless Add 1 pound to between 10 and 13.5 ounces water. May become supersatured and form crystals very quickly upon pouring. This one was a "just to try it" chemical.
 
 

Part I: This is the amount to add to a known amount of water to form a supersaturated solution. It is this part that is allowed to sit for a few days to become perfectly saturated.

Part II: This is the amount to add to the saturated solution if you are using the supersaturation method of crystal growth. This is unneeded if the evaporative method is employed.

 
 

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NOTE: Please reference Alan Holden and Phylis Singer, Crystals and Crystal Growing, for more growing instructions.